Question

plz give answer fast ....... how are thermometer used to measure the air temperature in dessert different from those used at the poles

Answer 1

used in preference to mercury for meteorological measurements of minimum temperatures and can be used down to −70 °C (-94 °F). The physical limitation of the ability of a thermometer to measure low temperature is the freezing point of the liquid used.
IN DESERTS...Cryometers are used to measure temperatures in space. Pyrometers are used to measure very high temperatures. The steel industry uses pyrometers to measure the temperatures of iron and other metals. Astronomers use infrared thermometers to measure temperatures in space, for instance.

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